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Method for awakening emergency broadcast by subcarriers, cable television set top box and system

A technology of emergency broadcasting and sub-carrier, which is used in broadcasting circuit devices, broadcasting specific applications, electrical components, etc.

Inactive Publication Date: 2021-05-11
六安富华智能信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for waking up an emergency broadcast by a subcarrier, a cable TV set-top box and a system, aiming at solving the problem of how a DVB-C set-top box responds to an emergency message and plays an emergency broadcast

Method used

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  • Method for awakening emergency broadcast by subcarriers, cable television set top box and system
  • Method for awakening emergency broadcast by subcarriers, cable television set top box and system
  • Method for awakening emergency broadcast by subcarriers, cable television set top box and system

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Embodiment Construction

[0085] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0086] Example Figure 1-3 As shown, the method, cable TV set-top box and system for waking up emergency broadcast by subcarrier, wherein,

[0087] In one aspect of this embodiment, the method for waking up an emergency broadcast by a subcarrier includes the following steps:

[0088] (1) When the DVB-C set-top box 400 is turned off or in standby or playing a program, the FM subcarrier receiving module 1 receives the FM subcarrier broadcast signal, demodulates and decodes the FM subcarrier data, and then decrypts and analyzes the FM subcarrier module 2 Decrypt and analyze FM subcarrier data to obtain emergency messages;

[0089] FM subcarrier broadcasting is one of FM-SCA broadcasting, FM-RDS broadcasting, ...

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Abstract

The invention discloses a method for awakening an emergency broadcast by subcarriers, a cable television set top box and a system. The method comprises the following steps that: a frequency modulation subcarrier receiving module and a frequency modulation subcarrier decryption analysis module obtain an emergency message from a frequency modulation subcarrier broadcast signal, the emergency message comprises an emergency instruction and emergency information, and the emergency information is emergency broadcast content; a DVB-C receiving module obtains a DVB-C program from a DVB-C broadcast television signal; a first control module receives the emergency message, executes the emergency instruction, and wakes up the DVB-C set top box in advance for a necessary time period; and the first control module converts the emergency broadcast content into a media type, synthesizes and outputs the emergency broadcast content. According to the invention, the emergency message in the frequency modulation subcarrier broadcast signal is detected and received in real time, and the DVB-C set top box is awakened to carry out the emergency broadcast.

Description

technical field [0001] The invention belongs to the technical field of emergency broadcasting, and in particular relates to a method for waking up emergency broadcasting by subcarriers, a cable TV set-top box and a system. Background technique [0002] The cable digital TV DVB-C set-top box receives, demodulates, demultiplexes and decodes DVB-C radio and television signals, obtains radio and television program data, and outputs them to the TV for playback. When natural disasters or social public events occur, the emergency broadcast management platform sends emergency messages to DVB-C set-top boxes. When the DVB-C set-top box is turned off, standby or playing programs, there is a problem of how to respond to emergency messages and play emergency broadcasts. [0003] The existing emergency broadcast system inserts the emergency message into the DVB-C broadcast TV signal, and the DVB-C set-top box receives and separates the emergency message. The disadvantage is that the DVB...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/426H04N21/435H04N21/439H04N21/4402H04N21/443H04N21/462H04N21/488H04N21/81H04H20/59H04H20/46
CPCH04H20/46H04H20/59H04N21/42607H04N21/435H04N21/4355H04N21/4398H04N21/440218H04N21/4432H04N21/4436H04N21/4622H04N21/4882H04N21/814
Inventor 张瑞勋
Owner 六安富华智能信息科技有限公司
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